EP0124850B1 - Usage de coagulants liquides neutres à un composé pour la coagulation de vernis et de matières de revêtement - Google Patents

Usage de coagulants liquides neutres à un composé pour la coagulation de vernis et de matières de revêtement Download PDF

Info

Publication number
EP0124850B1
EP0124850B1 EP84104859A EP84104859A EP0124850B1 EP 0124850 B1 EP0124850 B1 EP 0124850B1 EP 84104859 A EP84104859 A EP 84104859A EP 84104859 A EP84104859 A EP 84104859A EP 0124850 B1 EP0124850 B1 EP 0124850B1
Authority
EP
European Patent Office
Prior art keywords
water
coagulants
salts
coagulation
paint
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP84104859A
Other languages
German (de)
English (en)
Other versions
EP0124850A1 (fr
Inventor
Jürgen Dr. Geke
Hans-Jörg Rehm
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Henkel AG and Co KGaA
Original Assignee
Henkel AG and Co KGaA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Henkel AG and Co KGaA filed Critical Henkel AG and Co KGaA
Priority to AT84104859T priority Critical patent/ATE25932T1/de
Publication of EP0124850A1 publication Critical patent/EP0124850A1/fr
Application granted granted Critical
Publication of EP0124850B1 publication Critical patent/EP0124850B1/fr
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/71—Paint detackifiers or coagulants, e.g. for the treatment of oversprays in paint spraying installations

Definitions

  • the invention relates to the use of liquid neutral one-component coagulating agents for coagulating lacquers and coating agents.
  • a paint coagulant is now used, which means that either the paint coagulate floats in the calming basin, i.e. floats, which allows skimming of the coagulate from the water surface, or sediments the coagulate, after which it is cleared from the pool floor by means of a scraper belt.
  • alkaline powdered and alkaline liquid products as well as powdered neutral products have been added to the circulating water.
  • a liquid two-component coagulant can also be used via a complex dosing system.
  • GB-A-1 512 022 flocculating i.e. described the association of particles under the action of intermolecular bridging macromolecules.
  • These are composed of inorganic metal salts which act as clarifiers, such as iron (11) chloride or aluminum sulfate, and organic cationic polymers such as polyvinylpyridine or polyamines in aqueous solution.
  • Water-soluble cationic polymers which are available in powder form and are used as flocculants, are described in DE-A-27 49 295.
  • water-soluble inorganic salts are added in powder form, whereby a water-soluble cationic polymer is obtained in the form of a solid mass.
  • FR-A-2 263 982 describes a process for removing oils, solvents and paint raw materials from waste water using soluble or dispersible carriers and flocculants.
  • Modified polysaccharides with anionic or cationic properties are used here together with cationic or anionic flocculants, such as polyacrylamides, polyacrylates, polyimines and polyamide amines, individually or in a mixture.
  • inorganic flocculants such as iron and aluminum sulfates or chlorides, can also be used alone or together with organic flocculants.
  • FR-A-1 489 064 is an additive for rinsing liquids which are used for paint coagulation, consisting of a water-soluble alkali metal and / or alkaline earth metal salt, a poorly water-soluble hydroxide, for example magnesium, iron, aluminum, chromium - and preferably calcium hydroxide, and an amine or a mixture of amines, preferably a polyamine, cycloaliphatic diamine, triethanolamine and diethanolamine.
  • FR-A-2 277 613 describes a method for separating paint mist from water-dilutable paints from the exhaust air from water-sprinkled paint spraying systems.
  • water-soluble, low-volatility, low-molecular-weight salt-like electrolytes are added to the water used for sprinkling the paint spraying system in such an amount that the specific weight of the aqueous salt solution at 20 ° C. is at least 1.01.
  • Possible salt-like electrolytes are salts of the metals of the 1st and 2nd main group and of the 1st, 2nd, 4th, 5th, 6th and 8th subgroup of the periodic system of the elements with inorganic and / or organic acid residues.
  • Sodium chloride, calcium chloride, prim are particularly preferred.
  • sec. Sodium sulfate, prim., Sec. and tert.
  • Sodium phosphate, ammonium carbonate and ammonium phosphate are used.
  • the pH values of the aqueous solution of coagulants which have been customarily used up to now are mostly in the alkaline range. This ensures that the individual paint or wax particles are usually sufficiently detackified and the function of the water-carrying systems is not disturbed. However, this made a monitoring of the alkalinity of the baths and if necessary. a neutralization of the coagulate water before discharge into the sewage system is absolutely necessary.
  • the resins or binders of the paints can be hydrolyzed.
  • the result is disruptive foaming and relatively expensive anti-foaming agents have to be added.
  • the invention attempts to counteract these disadvantages by the fact that its mode of action is not based on the formation of bulky adsorbents, flakes or the like, as in the case of the products customary hitherto. Rather, it causes the neutralization of the electrical marginal charges of the paint particles and the subsequent agglomeration of the microparticles without the formation of intermediate products.
  • the liquid neutral product used according to the invention is suitable for the coagulation of all common types of lacquer as well as of coating agents such as waxes and underbody protection.
  • the coagulate obtained is completely detached, but not hard, does not adhere to the technical equipment and can be discharged very well. White, water-sprinkled splash walls are not discolored.
  • the present invention relates to the use of liquid one-component coagulants which contain salts of calcium and / or salts of magnesium and also cationically modified polyethyleneimines in a ratio of 50: 1 to 1: 1 by protonation or methylation, for coagulating paints and coating compositions in water-sprinkled systems Spray booths at pH values in the range from 6 to 9, the content of calcium or magnesium salts in the coagulating solution used being 1 to 50 ppm per hour of operating time and the content of polyethyleneimines 0.1 to 20 ppm per hour of operating time.
  • the calcium and / or magnesium salts mentioned must be water-soluble. Salts of calcium in the form of nitrate and / or chloride and / or salts of magnesium in the form of nitrate, chloride and / or sulfate are particularly suitable.
  • the polyethyleneimines are either cationically modified by protonation or alkylation, usually methylation, of the nitrogen or converted into the corresponding ammonium salts.
  • the degree of modification is different and depends on the neutral starting polymer, on the corresponding acid for protonation or on the corresponding alkylation agent. Tertiary nitrogen atoms are not fully protonated or alkylated.
  • Protonated and / or methylated polyethyleneimines can be used which have a molecular weight of 5 ⁇ 10 4 to 5 ⁇ 10 7 , preferably 7.5 ⁇ 10 4 to 5 ⁇ 10 6 .
  • the mixtures used from the electrolytes mentioned and the water-soluble modified polyethyleneimines give homogeneous solutions which generally cause the coagulate to flotate.
  • the circulating water can be reused.
  • the paint is applied by hand once or several times a week, depending on the paint load. Larger plants have so-called Schraber chains, which remove the paint sludge from the bath surfaces continuously or discontinuously.
  • the essential components, inorganic salts and polyethyleneimines, can be contained in a different ratio in the application solutions used for the coagulation of paints and coating agents.
  • the ratio of the molar proportions of the components is in a range from 50: 1 to 1: 1, preferably from 15: 1 to 5: 1.
  • the formulations of the coagulants according to the invention can if necessary.
  • water soluble biocides such as Formaldehyde, isothiazolines and their derivatives and pyridine-N-oxide and its derivatives are additionally added.
  • the agents used in accordance with the invention are produced in such a way that either liquid aqueous concentrates of the electrolytes are prepared with the addition of polyethyleneimines and / or further auxiliary substances, or else the corresponding active ingredients are mixed in a ratio of 50: 1 to 1: 1. These mixtures can then be brought into the desired liquid concentrate form at a given time or at the place of use by simply dissolving them in the associated amount of water and thus added to the circulating water.
  • the addition is expediently carried out at a point with good turbulence of the circulating water with the pump running in order to ensure rapid distribution guarantee. In this way, completely homogeneous solutions are obtained, the pH of which can be adjusted to 6 to 9, if necessary, using known methods.
  • the coagulants used according to the invention are metered either continuously using suitable metering pumps or batchwise, for example once a day manually.
  • the coagulating agents used in accordance with the invention are added to the coagulating solution in such an amount that the content of salts of calcium and / or magnesium is 1 to 50 ppm per hour of operating time and the content of modified polyethyleneimines is 0.1 to 20 ppm per hour of operating time. This corresponds to 1 to 50 g per m 3 circulating liquid per hour operating time of the system or 0.1 to 20 g per m3 circulating liquid per hour operating time of the system.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Paints Or Removers (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)

Claims (1)

  1. Utilisation d'agents de coagulation liquides à un composant contenant:
    a) des sels de calcium sous forme de nitrate et/ou de chlorure et/ou de sels de magnésium sous forme de nitrate, de chlorure et/ou de sulfate, ainsi que
    b) des polyéthylène-imines qui sont modifiées par voie cationique par protonisation ou méthylation,

    dans un rapport (a) à (b) de 50:1 à 1:1, de préférence, de 15:1 à 5:1, pour la coagulation de peintures et d'agents d'enduction dans des cabines de pulvérisation à ruissellement d'eau à des pH se situant dans l'intervalle de 6 à 9, tandis que, dans la solution de coagulation utilisée, la teneur en (a) est de 1-50 parties par million par heure de temps de fonctionnement de l'installation et que la teneur en (b) est de 0,1 à 20 parties par million par heure de temps de fonctionnement de l'installation.
EP84104859A 1983-05-07 1984-04-30 Usage de coagulants liquides neutres à un composé pour la coagulation de vernis et de matières de revêtement Expired EP0124850B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84104859T ATE25932T1 (de) 1983-05-07 1984-04-30 Verwendung fluessiger neutraler einkomponentenkoagulierungsmittel zur koagulierung von lacken und beschichtungsmitteln.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3316878 1983-05-07
DE19833316878 DE3316878A1 (de) 1983-05-07 1983-05-07 Verwendung fluessiger neutraler einkomponenten-koagulierungsmittel zur koagulierung von lacken und beschichtungsmitteln

Publications (2)

Publication Number Publication Date
EP0124850A1 EP0124850A1 (fr) 1984-11-14
EP0124850B1 true EP0124850B1 (fr) 1987-03-18

Family

ID=6198525

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84104859A Expired EP0124850B1 (fr) 1983-05-07 1984-04-30 Usage de coagulants liquides neutres à un composé pour la coagulation de vernis et de matières de revêtement

Country Status (9)

Country Link
US (1) US4541931A (fr)
EP (1) EP0124850B1 (fr)
JP (1) JPS6034790A (fr)
AT (1) ATE25932T1 (fr)
BR (1) BR8402081A (fr)
CA (1) CA1227720A (fr)
DE (2) DE3316878A1 (fr)
ES (1) ES532259A0 (fr)
MX (1) MX168563B (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4629572A (en) * 1986-02-27 1986-12-16 Atlantic Richfield Company Paint detackification method
DE3931907A1 (de) * 1989-09-25 1991-04-04 Henkel Kgaa Waessriges lackoverspray-schutzcoating fuer spritzkabinen sowie verfahren zu dessen herstellung
JPH047361U (fr) * 1990-05-09 1992-01-23
DE4025729A1 (de) * 1990-08-14 1992-02-20 Henkel Kgaa Verwendung von molybdaenverbindungen zur lack-koagulierung
DE4025730A1 (de) * 1990-08-14 1992-02-27 Henkel Kgaa Zweikomponentenmittel zur koagulation von lacken, wachsen und beschichtungsmitteln
DE4034596A1 (de) * 1990-10-31 1992-05-07 Henkel Kgaa Verfahren zur aufarbeitung von lackkoagulaten und deren verwendung
DE4136445A1 (de) * 1991-11-06 1993-08-26 Henkel Kgaa Verfahren zur regulierung und/oder zum abbau von unerwuenschten viskositaets und csb-werten in lackkoagulationswaessern
DE4216352A1 (de) * 1992-05-18 1993-11-25 Henkel Kgaa Verfahren zur Entklebung von Koagulation von Lacken
SE514966C2 (sv) * 1999-09-20 2001-05-21 Alfa Laval Ab Sätt vid rening av vatten som utnyttjats för fordonstvätt
DE102005050201B3 (de) * 2005-10-18 2007-04-26 Henkel Kgaa Herstellung halogenidarmer Polymerlösungen mit kationischen Aminogruppen
DE102006026573A1 (de) * 2006-06-06 2007-12-13 Henkel Kgaa Stabile, hochkonzentrierte Aluminiumcarboxylat-Lösungen
BRPI0713654A2 (pt) * 2006-06-28 2012-10-23 Valspar Sourcing Inc método para vedar a borda de um substrato de madeira processado e sistema de vedação de borda para um substrato de madeira processado
US20100304126A1 (en) * 2006-06-28 2010-12-02 Valspar Sourcing, Inc. Method and system for coating wood substrates using organic coagulants

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3203910A (en) * 1962-04-13 1965-08-31 Dow Chemical Co Polymerization of alkylenimines
US3252900A (en) * 1963-11-18 1966-05-24 Dow Chemical Co Dewatering sewage sludge by gravity
US3288640A (en) * 1965-01-11 1966-11-29 Calgon Corp Methods of preventing, controlling, and removing alluvium in cooling water systems
FR1489064A (fr) * 1965-04-24 1967-07-21 Solvay Werke Gmbh Additifs pour liquides de lavage destinés à la coagulation des particules de peinture
US3579488A (en) * 1969-01-16 1971-05-18 Dow Chemical Co Water-soluble copolymers of alkylenimine and alkylene sulfide
US3951792A (en) * 1972-03-30 1976-04-20 Gaf Corporation Flocculation of suspended solids
DE2412452C3 (de) * 1974-03-15 1981-01-08 Benckiser-Knapsack Gmbh, 6802 Ladenburg Verfahren zum Entfernen von ölen, Lösungsmitteln und Lackstoffen aus Abwasser
DE2433193C3 (de) * 1974-07-10 1978-05-03 Vianova Kunstharz Ag, Wien Verfahren zur Abscheidung von Farbnebeln von wasserverdiinnbaren Lacken in Farbspritzanlagen
CA1074204A (fr) * 1975-11-11 1980-03-25 Byron C. Chambers Composition et methode de dispersion de polymeres floculeux de poids moleculaire eleve
GB1512022A (en) * 1976-08-05 1978-05-24 Hemlab Ag Flocculating agents for water treatment
JPS5916563B2 (ja) * 1976-11-04 1984-04-16 日東化学工業株式会社 水溶性カチオン重合体の製法
US4096061A (en) * 1977-01-05 1978-06-20 Drew Chemical Corporation Recovery and reuse of paint solids from waste water
US4401574A (en) * 1981-07-21 1983-08-30 Drew Chemical Corporation Flocculation of aqueous paint waste

Also Published As

Publication number Publication date
MX168563B (es) 1993-05-31
ES8505621A1 (es) 1985-06-01
US4541931A (en) 1985-09-17
CA1227720A (fr) 1987-10-06
ATE25932T1 (de) 1987-04-15
JPS6034790A (ja) 1985-02-22
DE3316878A1 (de) 1984-11-08
JPH0516915B2 (fr) 1993-03-05
BR8402081A (pt) 1984-12-11
ES532259A0 (es) 1985-06-01
DE3462661D1 (en) 1987-04-23
EP0124850A1 (fr) 1984-11-14

Similar Documents

Publication Publication Date Title
EP0124850B1 (fr) Usage de coagulants liquides neutres à un composé pour la coagulation de vernis et de matières de revêtement
US4067806A (en) Formulation and application of compositions for the detackification of paint spray booth wastes
EP0335210B1 (fr) Procédé de coagulation de vernis et autres revêtements organiques
DE69214507T2 (de) Verfahren zur Entfernung von Rückständen von Farben aus wasserbassierten Anstrichsystemen unter Verwendung von Aluminiumsalzen
DE3412763A1 (de) Mittel zur koagulierung von lacken, wachsen und beschichtungsmitteln
EP0117586B1 (fr) Procédé pour coaguler et déposer les résidus d'un vernis à teneur élevée en matières solides
EP0294810B1 (fr) Composition de décapage à base de mélamine-formaldéhyde/styrène-acrylate
DE69030766T2 (de) Mittel und verfahren zum behandeln von spritzkabinen
DE3047527C2 (de) Verfahren zur Abscheidung von Lacknebeln
EP0163108B1 (fr) Polymère emphotère hydrophobe pour la coagulation des peintures
DE4216352A1 (de) Verfahren zur Entklebung von Koagulation von Lacken
US5147558A (en) One drum activator catalyzed paint detackification program
EP0543849B1 (fr) Utilisation de composes de molybdene pour coaguler des laques
DE69206708T2 (de) Anionische und nicht-ionische Polymerlösungen als Entlackierungsmittel
EP0626984B1 (fr) Polyamidoamines dans les eaux de circulation de separateurs par voie humide
WO1991019679A1 (fr) Coagulants a base de composes d'hydroxyde a deux couches
DE69413294T2 (de) Entlackungsmittel
WO2002048045A1 (fr) Procede et agents pour traiter l'eau de circulation dans des cabines de peinture
EP0633913B1 (fr) Glycolethers de polyethylene d'alkyle a groupes terminaux fermes utiles comme additifs de coagulants
US5250190A (en) On-line blending method for activator catalyzed paint detackification program
CA1336388C (fr) Melange unitaire de polymere cationique et de sel anionique, agent anti-adhesif pour peintures, dans des cabines de pistolage
EP2464607A1 (fr) Procédé de retraitement de l'eau de circulation d'une installation de mise en peinture
JPS6268506A (ja) 廃塗料を含む水の処理剤
DE4236530A1 (de) Verwendung von lagerstabilem Aluminiumtriformiat zur Entklebung und Koagulation von Lacken

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE DE FR GB IT NL SE

17P Request for examination filed

Effective date: 19841206

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE DE FR GB IT NL SE

REF Corresponds to:

Ref document number: 25932

Country of ref document: AT

Date of ref document: 19870415

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3462661

Country of ref document: DE

Date of ref document: 19870423

ET Fr: translation filed
ITF It: translation for a ep patent filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19920421

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19920430

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19930430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19931101

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19930430

EAL Se: european patent in force in sweden

Ref document number: 84104859.8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19980409

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19980415

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19980416

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19980511

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19980609

Year of fee payment: 15

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990430

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990501

BERE Be: lapsed

Owner name: HENKEL K.G.A.A.

Effective date: 19990430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19991231

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

EUG Se: european patent has lapsed

Ref document number: 84104859.8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000201